Bending auxiliary device for numerical control bending machine

Abstract

The bending auxiliary device for the numerical control bending machine comprises an installation frame, an angle adjusting mechanism, a punch replacing mechanism and a punch body, the angle adjusting mechanism used for changing the bending angle is arranged on the surface of the installation frame, when the bending angle needs to be adjusted, the angle adjusting mechanism is driven by rotating a double-thread rod, and the punch replacing mechanism is driven by rotating the double-thread rod. Due to the fact that the two push plates are hinged to the bottom of the first plate and the bottom of the second plate respectively, the included angle between the first plate and the second plate can be adjusted, the corresponding punch body is replaced, the abutting frame moves upwards, and the two springs are extruded, so that the abutting frame does not abut against the sliding rail, and the punch body can be taken out. A metal sheet needing to be bent is placed on the top of the first plate and the top of the second plate, the motor drives the double-thread lead screw to rotate, the two correcting inclined plates are controlled to be close to each other to center the metal sheet, the hydraulic rod is started to drive height adjustment of the floating table, and therefore the punch body is controlled to bend the metal sheet.

Description

Technical Field

[0001] This utility model relates to the field of CNC bending machine technology, specifically a bending auxiliary device for CNC bending machines. Background Technology

[0002] Bending machines are a common piece of equipment in daily life, capable of bending thin plates. However, with current technology, the bending angle of the plates cannot be adjusted to adapt to different bending needs, and different punch heads need to be replaced, which takes a long time.

[0003] For example, the authorized patent document with application number CN202320549770.6 discloses an auxiliary positioning device for a bending machine, which includes a base, side plates and a positioning frame. Two horizontal plates are fixedly installed on the inner side of the positioning frame, and support rods are slidably connected to the lower ends of the two horizontal plates. Anti-wear pads are movably connected between the two support rods and the horizontal plates.

[0004] The aforementioned patent has the limitation that the bending angle of the sheet metal cannot be adjusted. Therefore, we need to provide a bending auxiliary device for CNC bending machines. Summary of the Invention

[0005] The purpose of this utility model is to provide a bending auxiliary device for CNC bending machines. An angle adjustment mechanism is set in the mounting frame, and a push plate linkage structure driven by a double threaded screw is adopted to realize the bending angle adjustment. In conjunction with the punch replacement mechanism, the punch can be quickly replaced without special tools, reducing the skill requirements of the operator, and optimizing the coordination between angle adjustment and punch replacement, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bending auxiliary device for a CNC bending machine, comprising:

[0007] The mounting bracket includes an angle adjustment mechanism, a punch replacement mechanism, and a punch body. The surface of the mounting bracket is provided with an angle adjustment mechanism for changing the bending angle, and the top of the mounting bracket is provided with a punch replacement mechanism for quick replacement of the punch body.

[0008] The angle adjustment mechanism includes a rod, a first plate, a second plate, and an adjusting component. The rod is fixedly installed in the first plate, the first plate is embedded in the groove of the second plate, and the rod is rotatably connected to the second plate through a bearing. The top of the mounting frame is provided with an adjusting component for the synchronous rotation of the first plate and the second plate.

[0009] Preferably, the adjusting component includes a push plate, a groove, a double-threaded rod, and a positioning component. The groove is formed inside the mounting frame. The double-threaded rod is rotatably mounted inside the mounting frame. Push plates are threaded onto both sides of the surface of the double-threaded rod. The two push plates are respectively hinged to the bottom of the first plate and the second plate. The bottom of the mounting frame is provided with a positioning component to fix the push plates.

[0010] Preferably, the positioning component includes a mounting rod, a limiting bolt, and a threaded groove. Three mounting rods are fixedly installed at the bottom of the mounting frame, and the limiting bolts are slidably installed in each of the three mounting rods. The threaded groove is located on the surface of the bottom push plate of the second plate. After the limiting bolt is screwed into the threaded groove, it presses against the push plate to limit the displacement of the push plate.

[0011] Preferably, the top of the double-threaded rod is provided with a protective cover, which is fixed in the groove, and the interior of both push plates slides in contact with the outer wall of the protective cover.

[0012] Preferably, the punch replacement mechanism includes a floating platform, a slide rail, a slide groove, and an abutment. The bottom of the floating platform is provided with a slide groove, the top of the punch body is provided with a slide rail that is adapted to the slide groove, and the abutment is used to prevent the slide rail from falling out of the slide groove.

[0013] Preferably, the abutting component includes a groove, an abutting frame, a spring, and a fixing plate. The floating platform has a groove, and an abutting frame that is slidably installed in the groove and fits against one end of the slide rail. The bottom of the inner wall of the abutting frame is provided with springs, the tops of the two springs are located at the bottom of the fixing plate, and the fixing plate is fixedly installed in the groove.

[0014] Preferably, each of the two springs is provided with a sliding rod, and the surface of the sliding rod is slidably installed in the fixed plate, with the lower ends of the two sliding rods installed at the bottom of the contact frame.

[0015] Preferably, a hydraulic rod is mounted on the top of the mounting frame via a platform, and the lower end of the hydraulic rod is mounted on the top of the floating platform.

[0016] Preferably, a frame is fixedly installed on the surface of the platform, and a double-threaded screw is rotatably installed inside the frame. Both sides of the double-threaded screw are threaded with straightening inclined plates, and a motor is provided at one end of the double-threaded screw.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model features an angle adjustment mechanism within the mounting frame, employing a push-plate linkage structure driven by a double-threaded screw. This mechanism enables bending angle adjustment and, in conjunction with a punch replacement mechanism, allows for rapid punch replacement without the need for specialized tools, reducing the skill requirements for operators and optimizing the synergy between angle adjustment and punch replacement. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is an exploded perspective view of the adjusting component of this utility model;

[0021] Figure 3 This is an exploded perspective view of the positioning component of this utility model;

[0022] Figure 4 This is a cross-sectional view of the contact element of this utility model;

[0023] Figure 5 This is a partial three-dimensional view of the present invention.

[0024] In the diagram: 1. Mounting bracket; 2. Angle adjustment mechanism; 21. Rod; 22. First plate; 23. Second plate; 24. Adjusting component; 241. Push plate; 242. Groove; 243. Double threaded rod; 200. Positioning component; 201. Mounting rod; 202. Limit bolt; 203. Threaded groove; 3. Punch replacement mechanism; 31. Floating table; 32. Slide rail; 33. Slide groove; 34. Abutting component; 341. Groove; 342. Abutting frame; 343. Spring; 344. Fixing plate; 4. Punch body; 5. Protective cover; 6. Slide rod; 7. Hydraulic rod; 8. Stand; 9. Frame; 10. Double threaded screw; 11. Correcting inclined plate; 12. Motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution: a bending auxiliary device for a CNC bending machine, comprising:

[0027] Mounting bracket 1, angle adjustment mechanism 2, punch replacement mechanism 3 and punch body 4. The surface of mounting bracket 1 is provided with angle adjustment mechanism 2 for changing bending angle, and the top of mounting bracket 1 is provided with punch replacement mechanism 3 for quick replacement of punch body 4.

[0028] Specifically, an angle adjustment mechanism 2 is installed in the mounting frame 1 to meet the bending angle of different thin metal sheets, and a punch replacement mechanism 3 is installed to facilitate the quick replacement of the punch body 4, reducing the skill requirements of the operator and optimizing the coordination between angle adjustment and punch replacement.

[0029] The angle adjustment mechanism 2 includes a rod 21, a first plate 22, a second plate 23 and an adjusting member 24. The rod 21 is fixedly installed in the first plate 22. The first plate 22 is embedded in the groove of the second plate 23, and the rod 21 is rotatably connected to the second plate 23 through a bearing. The top of the mounting frame 1 is provided with an adjusting member 24 for the first plate 22 and the second plate 23 to rotate synchronously.

[0030] It is worth noting that the rod 21 is fixed inside the first plate 22, and both ends of the rod 21 penetrate the surface of the first plate 22. The rod 21 is also rotatably installed inside the second plate 23, wherein the first plate 22 is located in the groove inside the second plate 23, thereby forming a V-shaped angle between the first plate 22 and the second plate 23 for bending the metal sheet. The angle between the first plate 22 and the second plate 23 can be adjusted by the adjusting member 24, thereby realizing the adjustment of the bending angle of the metal sheet and enabling the adjustment of different bending angles of the metal sheet.

[0031] The adjusting component 24 includes a push plate 241, a groove 242, a double threaded rod 243, and a positioning component 200. The groove 242 is opened in the mounting frame 1. The double threaded rod 243 is rotatably installed in the mounting frame 1. Push plates 241 are threaded on both sides of the surface of the double threaded rod 243. The two push plates 241 are respectively hinged to the bottom of the first plate 22 and the second plate 23. The bottom of the mounting frame 1 is provided with a positioning component 200 for fixing the push plates 241.

[0032] Furthermore, a handwheel is provided at one end of the double threaded rod 243. The handwheel can rotate and adjust the double threaded rod 243. By rotating the double threaded rod 243, the two push plates 241 can be moved closer or further apart. Since the two push plates 241 are respectively hinged to the bottom of the first plate 22 and the second plate 23, the angle between the first plate 22 and the second plate 23 can be adjusted to adjust the bending angle of the metal sheet. The positioning part 200 is used to fix the push plate 241. The threads on the surface of the double threaded rod 243 already have a self-locking effect. The positioning part 200 is provided to further lock the push plate 241.

[0033] The positioning component 200 includes a mounting rod 201, a limiting bolt 202, and a threaded groove 203. Three mounting rods 201 are fixedly installed at the bottom of the mounting bracket 1. The limiting bolts 202 are slidably installed in each of the three mounting rods 201. The threaded groove 203 is located on the surface of the push plate 241 at the bottom of the second plate 23. After the limiting bolts 202 are screwed into the threaded groove 203, they press against the push plate 241 to limit the displacement of the push plate 241.

[0034] It should be noted that three mounting rods 201 are located at the bottom of the mounting bracket 1, and each of the three mounting rods 201 is equipped with a limiting bolt 202. The limiting bolt 202 slides vertically within the mounting rod 201. The purpose of the three limiting bolts 202 is to allow adjustment of three different angles and fix three angle values. The punch body 4 also has three corresponding limiting bolts 202. An annular portion is integrally formed on the surface of the limiting bolt 202 to prevent the limiting bolt 202 from detaching from the mounting rod 201. The threaded groove 203 is opened at the bottom of the push plate 241. Only one push plate 241 needs to have the threaded groove 203 at its bottom. The push plate 241 is fixed by threading the limiting bolt 202 into the threaded groove 203. Due to the presence of the double threaded rod 243, only one push plate 241 needs to be fixed. This positioning component 200 serves as a secondary limiting component.

[0035] The top of the double threaded rod 243 is provided with a protective cover 5, which is fixed inside the groove 242. The interior of the two push plates 241 slides in contact with the outer wall of the protective cover 5.

[0036] The protective cover 5 is located on the top of the double threaded rod 243. It is used to protect the double threaded rod 243, prevent debris from accumulating on the top of the double threaded rod 243, prevent debris from accumulating on the surface of the double threaded rod 243 and making it unusable, and can also guide the two push plates 241.

[0037] The punch replacement mechanism 3 includes a floating table 31, a slide rail 32, a slide groove 33 and a contact member 34. The bottom of the floating table 31 is provided with a slide groove 33, the top of the punch body 4 is provided with a slide rail 32 that is adapted to the slide groove 33, and the contact member 34 is used to prevent the slide rail 32 from falling out of the slide groove 33.

[0038] It is worth noting that the top of the punch body 4 is integrally formed with a slide rail 32, and the bottom of the floating table 31 is provided with a slide groove 33 that works with the slide rail 32. The slide rail 32 and the slide groove 33 work together and can only move horizontally, but cannot move vertically. The function of the abutment 34 is to abut and limit the slide rail 32 to prevent the slide rail 32 from coming off the slide groove 33. The abutment 34 is provided to facilitate the replacement of the punch body 4.

[0039] The contact element 34 includes a groove 341, a contact frame 342, a spring 343, and a fixing plate 344. The floating platform 31 has a groove 341, and the contact frame 342, which is in contact with one end of the slide rail 32, is slidably installed in the groove 341. The bottom of the inner wall of the contact frame 342 is provided with springs 343. The tops of the two springs 343 are located at the bottom of the fixing plate 344, and the fixing plate 344 is fixedly installed in the groove 341.

[0040] The contact frame 342 has its surface in contact with one end of the slide rail 32, limiting the slide rail 32. The slide rail 32 is slidably installed in the groove 341 and can move vertically within the groove 341. A pull ring is provided at the top of the contact frame 342, and the spring 343 is located between the fixing plate 344 and the bottom of the inner wall of the contact frame 342. Pulling the pull ring upward can move the contact frame 342 upward and compress the two springs 343, so that the contact frame 342 does not contact the slide rail 32, and the punch body 4 can be removed. The surface of the fixing plate 344 is slidably installed in the contact frame 342, and the fixing plate 344 is fixed in the groove 341.

[0041] Both springs 343 are equipped with sliding rods 6, and the surface of the sliding rods 6 is slidably installed in the fixed plate 344. The lower ends of both sliding rods 6 are installed in the bottom of the contact frame 342.

[0042] The slide bar 6 is designed to protect the spring 343, preventing it from bending, and also to guide the movement of the contact plate.

[0043] The top of the mounting frame 1 is equipped with a hydraulic rod 7 via the platform 8, and the lower end of the hydraulic rod 7 is installed on the top of the floating platform 31.

[0044] Specifically, starting the hydraulic rod 7 can drive the height adjustment of the floating table 31, thereby controlling the height adjustment of the punch body 4. The metal sheet to be bent is placed on top of the first plate 22 and the second plate 23. The hydraulic rod 7 drives the punch body 4 to move down, pressing and bending the metal sheet.

[0045] A frame 9 is fixedly installed on the surface of the stand 8. A double threaded screw 10 is rotatably installed inside the frame 9. A straightening inclined plate 11 is threaded on both sides of the surface of the double threaded screw 10, and a motor 12 is provided at one end of the double threaded screw 10.

[0046] Two straightening inclined plates 11 are used to assist in centering the metal sheet between the first plate 22 and the second plate 23. The motor 12 drives the double threaded screw 10 to rotate, controlling the two straightening inclined plates 11 to move closer to each other. The straightening inclined plates 11 are inclined surfaces, which provide a certain downward pressure and clamping force on both sides when they contact the metal sheet. The straightening inclined plates 11 are made of relatively light material. After centering the metal sheet, they move away from the metal sheet. A protective cover is also provided inside the frame 9 to protect the double threaded screw 10.

[0047] The hydraulic rod 7 and motor 12 involved in this application are both implemented using existing mature technologies and controlled by an external PLC. This is a conventional technical means in this field, so their specific circuit connections, control logic and working process will not be described in detail.

[0048] When the bending angle needs to be adjusted, the double threaded rod 243 is rotated to drive the two push plates 241 to move closer or further apart. Since the two push plates 241 are respectively hinged to the bottom of the first plate 22 and the second plate 23, the angle between the first plate 22 and the second plate 23 can be adjusted. The corresponding punch body 4 is replaced, the contact frame 342 moves upward and squeezes the two springs 343, so that the contact frame 342 does not contact the slide rail 32. The punch body 4 can be removed, and the metal sheet to be bent is placed on top of the first plate 22 and the second plate 23. The double threaded screw 10 is rotated by the motor 12 to control the two straightening inclined plates 11 to move closer to each other and center the metal sheet. The hydraulic rod 7 is activated to drive the height adjustment of the floating table 31, thereby controlling the punch body 4 to bend the metal sheet.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bending auxiliary device for a CNC bending machine, characterized in that, include: The mounting bracket (1), the angle adjustment mechanism (2), the punch replacement mechanism (3) and the punch body (4) are provided on the surface of the mounting bracket (1) for changing the bending angle, and the top of the mounting bracket (1) is provided with a punch replacement mechanism (3) for quickly replacing the punch body (4). The angle adjustment mechanism (2) includes a rod (21), a first plate (22), a second plate (23), and an adjusting member (24). The rod (21) is fixedly installed in the first plate (22), the first plate (22) is embedded in the groove of the second plate (23), and the rod (21) is rotatably connected to the second plate (23) through a bearing. The top of the mounting frame (1) is provided with an adjusting member (24) for the first plate (22) and the second plate (23) to rotate synchronously.

2. The bending auxiliary device for a CNC bending machine according to claim 1, characterized in that: The adjusting component (24) includes a push plate (241), a groove (242), a double threaded rod (243), and a positioning component (200). The groove (242) is opened in the mounting frame (1). The double threaded rod (243) is rotatably installed in the mounting frame (1). Push plates (241) are threaded on both sides of the surface of the double threaded rod (243). The two push plates (241) are respectively hinged to the bottom of the first plate (22) and the second plate (23). The bottom of the mounting frame (1) is provided with a positioning component (200) for fixing the push plates (241).

3. A bending auxiliary device for a CNC bending machine according to claim 2, characterized in that: The positioning component (200) includes a mounting rod (201), a limiting bolt (202), and a threaded groove (203). Three mounting rods (201) are fixedly installed at the bottom of the mounting bracket (1). The limiting bolts (202) are slidably installed in the three mounting rods (201), and the threaded groove (203) is located on the surface of the bottom push plate (241) of the second plate (23). After the limiting bolt (202) is screwed into the threaded groove (203), it presses against the push plate (241) to limit the displacement of the push plate (241).

4. A bending auxiliary device for a CNC bending machine according to claim 2, characterized in that: The top of the double threaded rod (243) is provided with a protective cover (5), which is fixed inside the groove (242). The interior of the two push plates (241) slides in contact with the outer wall of the protective cover (5).

5. A bending auxiliary device for a CNC bending machine according to claim 1, characterized in that: The punch replacement mechanism (3) includes a floating platform (31), a slide rail (32), a slide groove (33), and a contact member (34). The bottom of the floating platform (31) is provided with a slide groove (33), and the top of the punch body (4) is provided with a slide rail (32) that is compatible with the slide groove (33). The contact member (34) is used to prevent the slide rail (32) from falling out of the slide groove (33).

6. A bending auxiliary device for a CNC bending machine according to claim 5, characterized in that: The contact element (34) includes a groove (341), a contact frame (342), a spring (343), and a fixing plate (344). The floating platform (31) has a groove (341) inside, and a contact frame (342) that is in contact with one end of the slide rail (32) is slidably installed in the groove (341). The bottom of the inner wall of the contact frame (342) is provided with a spring (343). The top of the two springs (343) is located at the bottom of the fixing plate (344), and the fixing plate (344) is fixedly installed in the groove (341).

7. A bending auxiliary device for a CNC bending machine according to claim 6, characterized in that: Both springs (343) are provided with sliding rods (6), and the surface of the sliding rods (6) is slidably installed in the fixed plate (344). The lower ends of the two sliding rods (6) are installed at the bottom of the contact frame (342).

8. A bending auxiliary device for a CNC bending machine according to claim 5, characterized in that: The mounting bracket (1) has a hydraulic rod (7) mounted on its top via a platform (8), and the lower end of the hydraulic rod (7) is mounted on the top of the floating platform (31).

9. A bending auxiliary device for a CNC bending machine according to claim 8, characterized in that: A frame (9) is fixedly installed on the surface of the stand (8), and a double threaded screw (10) is rotatably installed inside the frame (9). A straightening inclined plate (11) is threaded on both sides of the surface of the double threaded screw (10), and a motor (12) is provided at one end of the double threaded screw (10).

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